CVE-2023-41885

Summary

CVE-2023-41885 is a vulnerability affecting Piccolo, an ORM and query builder that supports asyncio. In versions 0.120.0 and prior, the `BaseUser.login` implementation in Piccolo leaks sufficient information to enable malicious users to compile a list of valid usernames on the platform. Since Piccolo does not enforce strong passwords, these usernames can be used for password spray attacks, potentially leading to unauthorized user account takeovers. The impact of this vulnerability is limited as it necessitates the chaining with additional attack vectors. The likelihood of exploitation is considered possible due to the relative ease with which this vulnerability can be exploited, especially given the open-source nature of Piccolo-based login functions. This issue has been addressed in version 0.121.0.

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